/*
 * Copyright 2013 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.optaplanner.core.impl.localsearch.decider.acceptor.tabu.size;

public abstract class AbstractTabuSizeStrategy implements TabuSizeStrategy {

    protected int protectTabuSizeCornerCases(int totalSize, int tabuSize) {
        if (tabuSize < 1) {
            // At least one object should be tabu, even if totalSize is 0
            tabuSize = 1;
        } else if (tabuSize > totalSize - 1) {
            // At least one object should not be tabu
            tabuSize = totalSize - 1;
        }
        return tabuSize;
    }

}
